In contrast to the hippocampus, maternal obesity did not affect mRNA expression of EphA4, PSD-95 and synaptophysin in the PFC (p = 0.479; p = 0.329; p = 0.888; p = 0.535) (Fig. 2F–I). This evidence concerns the gene DLG4 and obesity due to melanocortin 4 receptor deficiency.